KR102363306B1 - System for sinus diagnosis and method for controlling led include oral illumination apparatus using the same - Google Patents

Abstract

The present invention relates to a sinus diagnosis system and a method for controlling an LED of a mouthpiece for oral irradiation using the same.
According to the present invention, in the method of controlling a mouthpiece for oral irradiation using a sinus diagnosis system, all of the plurality of LEDs attached to the mouthpiece for oral examination are lighted in a state in which the subject to be measured holds the mouthpiece for oral examination in his/her mouth irradiating light into the oral cavity of the subject to be measured, photographing the subject's face through a near-infrared camera included in the sinus measuring device, and a pair of first points (P1) on the left and right sides of the face, Setting the second point (P2) and the third point (P3), each of the plurality of LEDs attached to the mouthpiece for oral irradiation while adjusting the ratio of light irradiated by each of the steps of photographing the face of the measurement subject, Extracting each pixel value for each of the first to third points with respect to the photograph taken every time the photographing is performed, and the light combination ratio of the LED using the ratios of the pixel values between the first to third points including the step of selecting
As described above, according to the present invention, by implementing the light emitting unit using a small number of near-infrared LEDs, it is possible to accurately irradiate light into the sinuses.

Description

Sinus diagnosis system and LED control method of mouthpiece for oral examination using the same

The present invention relates to a sinus diagnosis system and a method for controlling an LED of a mouthpiece for oral irradiation using the same. It relates to an LED control method of a mouthpiece for oral irradiation using the same.

Currently, the number of patients with sinusitis (sinusitis) due to air pollution such as fine dust is continuously increasing, and as of 2016, it has already exceeded 6.6 million (Status of Sinusitis Health Insurance Patients, National Health Insurance Corporation).

Sinusitis can be classified into watery rhinorrhea (low viscosity), mucinous rhinorrhea (medium viscosity), and purulent rhinorrhea (high viscosity) according to the viscosity of rhinorrhea (nasal drip) accumulated in the sinuses. Several types of treatment methods can be applied.

However, there is currently no method that can accurately measure the concentration of rhinorrhea, so an indirect method is used to measure the amount of pus in the sinuses using optical equipment such as X-ray and CT and an indirect method.

Due to this, the abuse of antibiotics for sinusitis due to the absence of an accurate diagnosis is a continuous social issue, and the use of equipment such as X-ray and CT for indirect diagnosis also shows that 30% of sinusitis patients are children under 9 years of age. Considering that, there is a problem that serious damage due to radiation exposure may occur.

To solve this problem, Finnish Mediq Suomi proposed a product for diagnosing blockage in the sinuses using the echo of ultrasound. There is this.

To eliminate these shortcomings, there is a need for a technology that can accurately measure sinusitis by consistently interpreting data without using optical equipment such as X-ray and CT.

However, there is a disadvantage in that it is difficult to accurately measure sinusitis using the same near-infrared irradiation method because the face structure is different for each measurement target.

Therefore, there is a need for a method for determining the location and amount of irradiation of near-infrared rays irradiated in the optimal sinus for each measurement subject.

The technology that is the background of the present invention is disclosed in Republic of Korea Patent Registration No. 10-1653180 (2016.09.01. Announcement).

The technical problem to be achieved by the present invention is to provide a sinus diagnosis system for setting the irradiation rate of the LED irradiated to the sinuses by varying the irradiation rate of the LED of the mouthpiece for oral irradiation, and a method for controlling the LED of the mouthpiece for oral irradiation using the same it is for

According to an embodiment of the present invention for achieving this technical problem, in the method of controlling a mouthpiece for oral examination using a sinus diagnosis system, in a state in which the subject to be measured holds the mouthpiece for oral examination in his mouth, the mouse for oral examination The step of irradiating light to the inside of the oral cavity of the measurement target by emitting all of the plurality of LEDs attached to the piece, photographing the measurement target's face through the near-infrared camera included in the sinus measuring device, and on the left and right sides of the face Setting a pair of the first point (P1), the second point (P2) and the third point (P3), while adjusting the ratio of the light irradiated by each of the plurality of LEDs attached to the mouthpiece for oral irradiation photographing the face of the subject to be measured, extracting respective pixel values for each of the first to third points with respect to the photograph taken each time the photographing is performed, and a pixel value between the first and third points and selecting a light combination ratio of the LED using the ratios of .

The pair of first points P1 is the first and second virtual lines passing through each of the inner and outer points of the right eye in the photo taken through the near-infrared camera, and the tip of the lips and the tip of the nose, respectively. The point having the largest pixel value within the area where the first and second imaginary horizontal lines passing through intersect, and the third and fourth imaginary vertical lines passing through the inner and outer points of the left eye, respectively, and the tip of the lips and the tip of the nose A point having the largest pixel value is included in an area where the first and second virtual horizontal lines passing through each intersect, and the pair of second points P2 are the first and second points in the photographed picture. A point having the largest pixel value in an area where a vertical line, a fourth horizontal line passing through the center intersect between the second horizontal line and an imaginary third horizontal line passing through the center point of the pupil, and the third and fourth vertical lines, the third horizontal line 2 Including a point having the largest pixel value in an area where the fourth horizontal line passing through the center intersects between the second horizontal line and the virtual third horizontal line passing through the center point of the pupil, the pair of third points P3 is a point having the largest pixel value in an area where the first and second vertical lines, the third horizontal line, and the fourth horizontal line intersect in the photographed picture, and the third and fourth vertical lines and the third horizontal line; and a point having the largest pixel value within an area where the fourth horizontal line intersects.

The mouthpiece for oral irradiation, a plurality of LEDs may be symmetrically mounted on the left and right sides of the center, respectively.

The plurality of LEDs may be configured in three or more pairs.

In the step of photographing the face of the subject to be measured, in a state in which only the second LED adjacent to the first LED located on the left or right side of the mouthpiece for oral irradiation is turned on, the light between the first LED and the second LED photographing the face of the subject to be measured while varying the combination ratio, and in a state in which only the third LED adjacent to the second LED is turned on, the measurement while varying the light combination ratio between the second LED and the third LED It may include the step of photographing the subject's face.

The step of selecting the light combination ratio of the LED includes calculating a brightness index using the pixel values between the first to third points, and selecting the light combination ratio of the LED when the brightness index is the highest. may include steps.

The calculating of the brightness index may be performed using the following equation.

where U and V are coefficients.

The method may further include matching and storing the light combination ratio of the LED selected for each measurement target.

According to another embodiment of the present invention, in a sinus diagnosis system for controlling a mouthpiece for oral irradiation, in a state in which a subject to be measured holds the mouthpiece for oral examination in his mouth, a plurality of A control unit for controlling all LEDs to emit light to irradiate light into the oral cavity of the subject to be measured, and when the control unit adjusts the ratio of light irradiated by each of a plurality of LEDs attached to the mouthpiece for oral irradiation, the near-infrared camera A photographing unit for photographing the face of the subject to be measured, a setting unit for setting a pair of first points (P1), second points (P2), and third points (P3) on the left and right sides of the face, and the photographing A selection unit that extracts each pixel value for each of the first to third points with respect to the photograph taken each time, and selects the light combination ratio of the LED using the ratios of the pixel values between the first and third points include

As described above, according to the present invention, it is possible to accurately irradiate light into the sinuses even when a light emitting unit is implemented using a small number of near-infrared LEDs.

In addition, it is possible to accurately measure the sinus state by obtaining an optimal light combination ratio according to the internal skeletal structure of the oral cavity of the subject to be measured.

1 is a view for explaining a sinus diagnosis system according to an embodiment of the present invention.
Figures 2a to 2c is a view showing the appearance of the mouthpiece for oral irradiation according to an embodiment of the present invention.
3 is a view for explaining the configuration of a sinus measuring apparatus according to an embodiment of the present invention.
4 is a flowchart illustrating a sinus diagnosis method according to an embodiment of the present invention.
FIG. 5 is a flowchart for explaining step S420 of FIG. 4 .
6 is a view for explaining a first divided area to a third divided area according to an embodiment of the present invention.
7 is an exemplary diagram illustrating first to third points set according to an embodiment of the present invention.
8 is a diagram for explaining step S425.
9 is a flowchart for explaining step S430 of FIG. 4 .
10 is an exemplary view for explaining a process of measuring the inclination of a reference photo according to an embodiment of the present invention.
11A and 11B are exemplary views providing a sinus diagnosis result according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

Then, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

Hereinafter, a sinus diagnosis system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 .

1 is a view for explaining a sinus diagnosis system according to an embodiment of the present invention, and FIGS. 2A to 2C are views showing the appearance of a mouthpiece for oral examination according to an embodiment of the present invention.

As shown in FIG. 1 , the sinus diagnosis system according to an embodiment of the present invention includes a mouthpiece 100 for oral examination and a sinus measuring device 200 .

Here, the sinus diagnosis system according to an embodiment of the present invention analyzes a photograph taken using near-infrared rays, and analyzes the sinus index of the subject to be measured based on the analysis result.

First, the mouthpiece 100 for oral irradiation according to an embodiment of the present invention is implemented in the form of a mouthpiece, and irradiates near-infrared rays using an LED in the mouth of a subject to be measured.

In addition, the sinus measuring apparatus 200 acquires a plurality of near-infrared photos in a state of irradiating near-infrared rays, and analyzes the sinus index of the subject to be measured by using the acquired photos.

As shown in Fig. 1, when the subject to be measured puts his or her face in close contact with the sinus measuring device 200 with the mouthpiece 100 for oral irradiation in the mouth, the sinus measuring device 200 takes the subject to be measured and shows a general photo and You can take near-infrared photos. Then, the sinus measuring device 200 may take two types of pictures, a reference picture and a near-infrared picture, depending on whether the LED of the mouthpiece 100 for oral irradiation is turned on.

As shown in FIGS. 2A to 2C , the mouthpiece 100 for oral irradiation includes an outer portion 110 , an inner portion 120 and a support portion 130 .

The outer part 110 supplies power to the mouthpiece 100 for oral irradiation because a battery is included therein.

The inner portion 120 is a portion inserted into the oral cavity of the subject to be measured, and a plurality of LEDs 140 are included therein, and as shown in FIG. 2a , the plurality of LEDs 140 are symmetrically disposed on both sides as the center of the inner portion. . In addition, as shown in Figure 2b, the inner portion 120 is implemented in a state inclined to the side, so that the measurement target can be easily inserted into the oral cavity.

The plurality of LEDs 140 includes a first LED 140a, a second LED 140b, and a third LED 140c, and the measurement target puts the inner part 120 of the mouthpiece 100 for oral irradiation into the mouth. When bitten, the first LED (140a) is located in the innermost portion of the mouth of the measurement subject, the third LED (140c) is located in the outermost portion of the mouth of the measurement subject.

In addition, the support part 130 is located between the outer part 110 and the inner part 120, and corresponds to the part where the lips of the measurement subject touch. The support 130 is implemented in a curved shape so that the oral subject can easily adhere to it.

As shown in FIG. 2C , identification marks 150a and 150b are attached to the right side and the left side, respectively, in the outer direction of the support unit 130 .

The sinus measuring apparatus 200 may determine whether the subject to be measured is accurately biting the mouthpiece 100 for oral examination through the balance of the left and right recognition marks 150a and 150b shown in the near-infrared photograph. That is, the sinus measuring device 200 measures the balance of the left and right recognition marks 150a and 150b located at points spaced apart from each other, and the position of the mouthpiece 100 for oral examination held by the subject to be measured in the mouth. can determine whether

At this time, in FIGS. 2a to 2c, the number of LEDs 140 is expressed in the form of two pairs of three (140a, 140b, 140c), but the number and installation position of the LEDs are to be changed according to the oral structure of the subject to be measured. The symmetrical left and right LEDs may emit wavelengths of the same size, and neighboring LEDs may emit different wavelengths.

3 is a view for explaining the configuration of a sinus measuring apparatus according to an embodiment of the present invention.

As shown in FIG. 3 , the sinus measuring apparatus 200 according to an embodiment of the present invention includes a control unit 210 , a photographing unit 220 , a region setting unit 230 , a selection unit 240 , and a database 250 . do.

First, the control unit 210 controls all of the plurality of LEDs attached to the mouthpiece 100 for oral irradiation to emit light to irradiate light into the oral cavity of the subject to be measured.

In addition, the control unit 210 may adjust the ratio of the light irradiated by each of the plurality of LEDs attached to the mouthpiece 100 for oral irradiation.

Then, the photographing unit 220 photographs the face of the subject to be measured through the near-infrared camera.

That is, in a state in which the control unit 210 turns on only the second LED 140b adjacent to the first LED 140a located on the left or right side of the mouthpiece 100 for oral irradiation, the first LED 140a and the If the light combination ratio between the second LEDs 140b is different, the photographing unit 22 captures the face of the subject to be measured.

In addition, in a state in which the controller 210 turns on only the third LED 140c adjacent to the second LED 140b, if the light combination ratio between the second LED 140b and the third LED 140c is changed, , the photographing unit 220 photographs the face of the subject to be measured.

Next, the setting unit 230 sets a pair of first points, second points, and third points on the left and right sides of the photographed face of the subject to be measured.

The selector 240 extracts each pixel value for each of the first to third points from the photographed picture whenever a photograph is taken, and uses the ratios of the pixel values between the first to third points to combine the light of the LED. Choose a ratio.

Next, the database S250 matches and stores the light combination ratio of the LED selected for each measurement target.

Hereinafter, a method of controlling the mouthpiece 100 for oral examination of the sinus diagnosis system according to an embodiment of the present invention will be described with reference to FIGS. 4 to 11B .

4 is a flowchart illustrating a sinus diagnosis method according to an embodiment of the present invention.

First, in a state in which the subject to be measured holds the mouthpiece 100 for oral examination in his mouth, the sinus measuring device 200 acquires a reference picture by photographing the subject's face through a near-infrared camera (S410).

The sinus measuring device 200 photographs the face of the subject to be measured in a state in which near-infrared rays are irradiated to the face of the subject to be measured.

The sinus measuring device 200 photographs the face of the subject to be measured in a state in which a plurality of LEDs present in the mouthpiece 100 for oral irradiation are turned off to obtain a reference picture.

Next, the sinus measuring device 200 selects an optimal combination ratio of LED light by photographing while changing the combination ratio of the LEDs 140a, 140b, 140c attached to the mouthpiece 100 for oral irradiation (S420).

Hereinafter, S420 will be described in detail with reference to FIGS. 5 to 8 .

FIG. 5 is a flowchart for explaining step S420 shown in FIG. 4 .

First, the sinus measuring device 200 emits all of the plurality of LEDs attached to the mouthpiece 100 for oral irradiation to irradiate light into the inside of the subject's oral cavity, and uses a near-infrared camera to photograph the subject's face. (S421).

At this time, as shown in FIG. 1 , the subject to be measured uses the near-infrared camera included in the sinus measuring device 200 in a state in which the face is in close contact with the sinus measuring device 200 with the mouthpiece 100 for oral irradiation in the mouth. Take a picture of your face through

Next, the sinus measuring apparatus 200 sets a pair of first points P1, second points P2, and third points P3 on the left and right sides of the photographed face photo of the subject (S422) ).

Hereinafter, a process of setting the first point P1, the second point P2, and the third point P3 in step S422 using FIGS. 6 and 7 will be described.

First, the sinus measuring apparatus 200 divides a face photographed by a near-infrared photograph into a plurality of divided regions in order to set each point.

6 is a view for explaining a first divided area to a third divided area according to an embodiment of the present invention.

As shown in FIG. 6 , the sinus measuring apparatus 200 sets a plurality of virtual lines in vertical and horizontal directions in each near-infrared photograph to distinguish the first to third divided areas.

The first vertical line (V1), the second vertical line (V2), the third vertical line (V3), and the fourth vertical line (V4) are the outer point (E1) of the right eye, the right An imaginary line passing through the inner point of the eye (E2), the inner point of the left eye (E3), and the outer point of the left eye (E4) is shown.

In addition, the first horizontal line H1 and the second horizontal line H2 represent virtual lines passing through the lip end points M1 and M2 and the nose end points N1 and N2, respectively, in a picture taken through a near-infrared camera, respectively.

In addition, the third horizontal line H3 is an imaginary line passing through the center points T1 and T2 of the pupil in the picture taken through the near-infrared camera, and the fourth horizontal line H4 is the second horizontal line H2 and the third horizontal line (H3) represents an imaginary line passing through the center between

When the plurality of virtual vertical lines V1, V2, V3, and V4 and the plurality of virtual horizontal lines H1, H2, H3, and H4 are set in this way, a plurality of divided regions are generated by the intersecting lines.

That is, as shown in FIG. 6 , the first divided area corresponds to an area where a plurality of virtual vertical lines V1 , V2 , V3 and V4 and a plurality of virtual horizontal lines H1 and H2 intersect, and the second divided area corresponds to an area in which the plurality of virtual vertical lines V1, V2, V3, and V4 and the plurality of virtual horizontal lines H2 and H4 intersect, and the third division area includes the plurality of virtual vertical lines V1, V2, V3 , V4) and the plurality of virtual horizontal lines H3 and H4 intersect each other.

When a plurality of divided regions are set as shown in FIG. 6 , the sinus measuring apparatus 200 sets each point with respect to a specific point of each divided region.

7 is an exemplary diagram illustrating first to third points set according to an embodiment of the present invention.

As shown in FIG. 7 , the first to third points are set for each of the three near-infrared photos, and are set on the left and right sides of the face in each of the near-infrared photos.

As shown in FIG. 7 , the sinus measuring apparatus 200 sets first points LP1 and RP1 having the largest pixel value in the first divided area, and the second point having the largest pixel value in the second divided area. (LP2, RP2) is set, and the third point (LP3, RP3) having the largest pixel value in the third divided area is set.

In addition, the first to third points respectively set on the left and right sides may be set at positions symmetrical to each other or set at different positions, respectively.

Next, the sinus measuring device 200 is a first LED (140a) in a state in which only the first LED (140a) and the second LED (140b) positioned on the left or right side of the mouthpiece 100 for oral irradiation are turned on. The face of the subject to be measured is photographed while varying the light combination ratio between the and the second LED 140b (S423).

For example, the sinus measurement device 200 may measure the light combination ratio of the left and right first LEDs 140a and second LEDs 140b to 100:0, 67:33, 50:50, 33:67, 0 While changing to :100, take pictures of each subject's face.

Next, the sinus measuring device 200 while only the second LED (140b) and the third LED (140c) is turned on, while varying the light combination ratio between the second LED (140b) and the third LED (140c) The face of the subject to be measured is photographed (S424).

For example, the sinus measuring device 200 sets the light combination ratio of the third LED 140c of the left and right second LED 140b to 67:33, 50:50, 33:67, and 0:100. while taking pictures of each subject's face.

In the present invention, the light combination ratio for the three LEDs on the left and right is changed as described above, but the light combination ratio can be changed in other ways depending on the number of LEDs attached to the mouthpiece 100 for oral irradiation.

Next, for each picture taken at various combination ratios, each pixel value is extracted for each first to third point ( S425 ).

8 is a diagram for explaining step S425.

As shown in FIG. 8 , the sinus measuring apparatus 200 extracts each pixel value for each of the first to third points using the photos taken in the examples of steps S423 and S424.

That is, the sinus measuring device 200 is 100:0:0, 67:33:0, 50:50: the light combination ratio of the third LED (140c) of the first LED (140a), the second LED (140b): 0, 33:67:0, 0:100:0, 0:67:33, 0:50:50, 0:33:67 and 0:0:100 The pixel value of the third point is extracted.

At this time, the pixel value is extracted as a value between 0 and 255.

As shown in FIG. 8 , the sinus measuring apparatus 200 calculates a brightness index for each combination ratio using pixel values between the first to third points ( S426 ).

At this time, the sinus measuring apparatus 200 calculates the brightness index for each combination ratio by using Equation 1 below.

where U and V are coefficients.

Then, the sinus measuring apparatus 200 may obtain a brightness index result as shown in FIG. 8 by calculating the brightness index according to the combination ratio of the first LED 140a to the third LED 140c using Equation 1 .

Then, the sinus measuring apparatus 200 selects the LED light combination ratio when the brightness index is the highest, matches the LED combination ratio for each measurement target and stores it (S427).

For example, as shown in FIG. 8, after obtaining the brightness index for each combination ratio, the sinus measuring device 200 has the largest brightness index of 5.45, the first LED 140c to the third LED ( 140c), which is the combination ratio of 0:67:33.

Then, the sinus measurement device 200 matches the selected brightness ratio of 0:33:67 with the light irradiation ratio of the LED of the corresponding measurement target and stores it.

As such, through the step S420, the sinus measuring device 200 selects an optimal combination ratio of LED light for a plurality of LEDs attached to the mouthpiece 100 for oral irradiation.

Then, the sinus measuring device 200 applies the combination ratio of the LED selected in step S420 to the mouthpiece 100 for oral irradiation, and continuously shoots the face of the subject to be measured while changing the exposure time of the near-infrared camera. A near-infrared image is acquired (S430).

If, in the case of a subject whose light combination ratio of LEDs is stored in advance, the sinus measuring device 200 does not execute steps S421 to S427, but uses the matched light combination ratio of the LEDs inside the mouth of the subject to be measured. irradiate the light

Here, for convenience of description, it is exemplified as acquiring three near-infrared photos.

Then, the sinus measuring apparatus 200 acquires three near-infrared photos by adjusting the size of the aperture of the near-infrared camera or changing the exposure time by using the shutter speed.

Next, the sinus measuring apparatus 200 measures the inclination of the reference photograph using the face of the measurement subject photographed in the reference photograph (S440).

In order to measure the inclination of the reference photo, the sinus measuring apparatus 200 selects the center point T1 of the left pupil and the center point T2 of the right pupil of the measurement subject in the reference photograph.

9 is a flowchart for explaining step S440 of FIG. 4 , and FIG. 10 is an exemplary view for explaining a process of measuring the inclination of a reference photo according to an embodiment of the present invention.

First, the sinus measuring apparatus 200 sets an imaginary line C1 connecting the center points T1 and T2 of both pupils in the reference picture ( S441 ).

Then, the sinus measuring apparatus 200 measures the degree of inclination of the virtual line C1 with respect to the horizontal line C2 of the reference picture (S442).

That is, the sinus measuring apparatus 200 compares the virtual line C1 shown in FIG. 13 with the horizontal line C2 of the reference photograph to measure the degree of inclination of the reference photograph.

For example, if the virtual line C1 is inclined by 4° with respect to the horizontal line C2 of the reference picture, the sinus measuring apparatus 200 determines that the corresponding reference picture is inclined by 4°.

Next, the sinus measuring apparatus 200 corrects the horizontality of the plurality of near-infrared photos by rotating the plurality of near-infrared photos by the magnitude of the measured inclination (S450).

That is, the sinus measuring apparatus 200 rotates each of the three near-infrared photos by the inclined inclination (4°) measured in step S430 to correct the plurality of near-infrared photos to be in a horizontal state.

That is, the sinus measuring apparatus 200 corrects the three near-infrared photos to be horizontal in order to calculate the correct sinus index of the sinuses.

Next, the sinus measuring apparatus 200 sets a pair of first points, second points, and third points on the left and right sides for each of the three corrected near-infrared photos ( S460 ).

At this time, the sinus measuring apparatus 200 sets the first point, the second point, and the third point in the same manner as in step S421.

Next, the sinus measuring apparatus 200 calculates an evaluation index for the posture of the measurement subject for each of the plurality of near-infrared photographs (S470).

Here, the sinus measuring apparatus 200 calculates an evaluation index (T_score) for the posture of the measurement subject using Equation 1 below for the distance score (D_score), the slope score (A_score), and the pixel score (P_score).

Here, the distance score (D_score), the slope score (A_score), and the pixel score (P_score) are calculated using Equations 3 to 5 below.

First, the sinus measuring apparatus 200 calculates a distance score (D_score) by applying the number of pixels from the center to the center of each of the left and right pupils in the near-infrared photograph to the following equation.

Here, A is the distance coefficient, and t-dist is the difference in the number of pixels from the center of the photo to the center (T1, T2) of each of the left and right pupils.

In this case, the maximum value of the distance score D_score is set to 40.

For example, if t-dist is 40 and A is 0.2, the distance score (D_score) is calculated as 32.

Next, the sinus measuring apparatus 200 calculates a slope score (A_score) by applying the slope of the reference picture obtained in step S410 to Equation 4 below.

Here, B is the inclination coefficient, and angle is the inclination angle of the reference photo.

In this case, the maximum value of the slope score A_score is set to 20.

For example, if the inclination angle of the reference photo is 4° and the value of B is 1.5, the inclination score (A_score) is calculated as 14 according to Equation (3).

Next, the sinus measuring device 200 is the average of the pixel values within the range of 1 cm on both sides based on the line connecting the first point P1 and the second point P2 on the left side and the first point P1 on the right side A pixel score (P_score) is calculated by applying the average value of the pixel values within the range of 1 cm on each side (total of 2 cm) to the line connecting the second point P2 and the second point P2 to Equation 4 below.

Here, C is the pixel coefficient, p_diff is the average of the pixel values within the range of 1 cm on both sides based on the line connecting the first point P1 and the second point P2 on the left side of the calculated left and right pixels It is the difference value of the average value of the pixel values within the range of 1 cm on each side (total of 2 cm) based on the line connecting the first point P1 and the second point P2.

In this case, the maximum value of the pixel score P_score is set to 40.

For example, if the p_diff value is 30 and the value of C is 0.2, the pixel score P_score is calculated as 34 according to Equation (4).

At this time, as can be seen from Equations 3 to 5, since the maximum values of the distance score (D_score), the slope score (A_score), and the pixel score (P_score) are 40, 20 and 40 points, the evaluation index by Equation 1 The maximum value of (T_score) is set to 100 points.

Next, the sinus measuring apparatus 200 determines whether the evaluation index is equal to or greater than a reference value for each of the plurality of near-infrared photos calculated by Equation 1 (S480).

At this time, if there is a near-infrared photograph in which the evaluation index is calculated to be smaller than the reference value among the three near-infrared photographs, the sinus measuring apparatus 200 requests re-photography for the corresponding near-infrared photograph or determines that evaluation is impossible (S490).

On the other hand, if there is a near-infrared photograph in which the evaluation index is calculated to be greater than or equal to the reference value among the three near-infrared photographs, the sinus measuring apparatus 200 selects the near-infrared photograph having the largest pixel value among the corresponding near-infrared photographs (S500).

Here, the reference value may be a value set by the sinus measuring apparatus 200 or a value set by a user.

Then, the sinus measuring apparatus 200 calculates each of the left and right sinus indices by using the selected near-infrared photograph (S510).

That is, the sinus measuring apparatus 200 applies the pixel values at the first point P1, the second point P2, and the third point P3 in the selected near-infrared photograph to Equation 6 below to obtain the selected near-infrared photograph. Calculate the left and right sinus indices of each.

where X, Y, and Z are pixel coefficients and F is the sinus coefficient.

At this time, the sinus index refers to the amount of pus present in the sinuses.

When each of the left and right sinus indices of the subject to be measured are calculated in step S500, the sinus measuring apparatus 200 displays the calculated sinus indices (S520).

At this time, the sinus measuring apparatus 200 displays the calculated sinus index on the screen in numerical form or normalizes the sinus index and displays it on the screen in the form of a shaded area according to the normalized value.

11A and 11B are exemplary views providing a sinus diagnosis result according to an embodiment of the present invention.

11A is an exemplary view providing a diagnosis result according to a case in which the sinus index of the subject to be measured is 0, and FIG. 10B is an example of providing a diagnosis result according to the case where the sinus index of the subject to be measured is 93 points and 78 points on the left and right, respectively. It is also

That is, when the sinus index is 0 as shown in FIG. 11A , since there is no pus in the sinuses, the sinus measuring apparatus 200 provides the diagnosis result without being shaded.

On the other hand, if the sinus index is 93 points and 78 points on the left and right sides, respectively, as shown in FIG. 11B , the sinus measuring apparatus 200 provides a diagnostic result by changing colors according to the sinus index

That is, as shown in Figure 11b, if the sinus index is 0 or more and less than 40 points, the sinus measuring device 200 shows the color of the shade in green, and if the sinus index is 40 or more and less than 70 points, the sinus measuring device 200 represents the color of the shade in orange, and when the sinus index is greater than or equal to 70 and less than or equal to 100, the sinus measuring apparatus 200 represents the color of the shade in red.

Also, the sinus measuring apparatus 200 may numerically display the sinus index corresponding to each of the left and right sides of the face.

And, the sinus measurement device 200 provides a comprehensive opinion according to each of the left and right sinus index.

As described above, according to the present invention, even when a light emitting unit is implemented using a small number of near-infrared LEDs, it is possible to accurately irradiate light into the sinuses.

In addition, it is possible to accurately measure the sinus state by obtaining an optimal light combination ratio according to the internal skeletal structure of the oral cavity of the subject to be measured.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is only exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: mouthpiece for oral irradiation, 110: outer part,
120: inner portion, 130: support portion,
140a, 140b, 140c: LED, 200: sinus measuring device;
210: control unit, 220: photographing unit,
230: area setting unit, 240: selection unit,
250: database

Claims (16)

In the LED control method of the mouthpiece for oral irradiation using a sinus diagnosis system,
A step of irradiating light into the oral cavity of the subject to be measured by emitting all of the plurality of LEDs attached to the mouthpiece for oral irradiation in a state in which the subject to be measured holds the mouthpiece for oral irradiation in his/her mouth;
The face of the subject to be measured is photographed through the near-infrared camera included in the sinus measuring device, and a pair of first points (P1), second points (P2), and third points (P3) are located on the left and right sides of the face. steps to set up,
Taking each of the face of the measurement subject while adjusting the combination ratio of the light irradiated by each of the plurality of LEDs attached to the mouthpiece for oral irradiation;
extracting each pixel value for each of the first to third points with respect to the photograph taken whenever the photographing is performed, and
Using the ratios of pixel values between the first to third points, the LED control method of a mouthpiece for oral irradiation comprising the step of selecting a light combination ratio of the LED. According to claim 1,
The pair of first points (P1) is,
In the photo taken through the near-infrared camera, virtual first and second virtual lines passing through each of the inner and outer points of the right eye, and virtual first and second horizontal lines passing through each of the tip of the lips and the end of the nose intersect The point having the largest pixel value in the region, and imaginary third and fourth vertical lines passing through the inner and outer corners of the left eye, respectively, and imaginary first and second horizontal lines passing through the lip and nose end points, respectively Including the point having the largest pixel value within the intersecting area,
The pair of second points (P2) is,
A point having the largest pixel value in an area where the first and second vertical lines in the photographed picture intersect a fourth horizontal line passing through the center between the second horizontal line and a virtual third horizontal line passing through the center point of the pupil; and a point having the largest pixel value in an area where the third and fourth vertical lines and a fourth horizontal line passing through the center between the second horizontal line and a virtual third horizontal line passing through the center point of the pupil intersect,
The pair of third points P3 is,
A point having the largest pixel value in an area where the first and second vertical lines, the third horizontal line, and the fourth horizontal line intersect in the photographed picture, and the third and fourth vertical lines and the third horizontal line; And LED control method of the mouthpiece for oral irradiation comprising a point having the largest pixel value in the area where the fourth horizontal line intersects. According to claim 1,
The mouthpiece for oral irradiation,
LED control method of a mouthpiece for oral irradiation in which a plurality of LEDs are symmetrically mounted on the left and right sides of the center. 4. The method of claim 3,
The plurality of LEDs,
LED control method of mouthpiece for oral irradiation, which is listed in three or more on the left and right sides, respectively. 4. The method of claim 3,
The step of photographing the face of the subject to be measured,
In a state in which only the second LED adjacent to the first LED positioned on the left or right side of the mouthpiece for oral irradiation is turned on, the face of the measurement subject is measured while varying the light combination ratio between the first LED and the second LED filming, and
In a state in which only the third LED adjacent to the second LED is turned on, while varying the light combination ratio between the second LED and the third LED, the mouthpiece for oral irradiation comprising the step of photographing the face of the subject to be measured LED control method. 6. The method of claim 5,
The step of selecting the light combination ratio of the LED,
calculating a brightness index using pixel values between the first and third points; and
LED control method of the mouthpiece for oral irradiation comprising the step of selecting the light combination ratio of the LED when the brightness index is the highest. 7. The method of claim 6,
Calculating the brightness index comprises:
LED control method of the mouthpiece for oral irradiation calculated using the following equation.

where U and V are coefficients. According to claim 1,
LED control method of the mouthpiece for oral irradiation further comprising the step of matching and storing the light combination ratio of the LED selected for each measurement target. In the sinus diagnosis system for controlling a mouthpiece for oral examination,
A control unit that controls to irradiate light into the oral cavity of the subject by emitting all of the plurality of LEDs attached to the mouthpiece for oral irradiation in a state where the subject to be measured holds the mouthpiece for oral irradiation in his/her mouth,
When the control unit adjusts the ratio of the light irradiated by each of the plurality of LEDs attached to the mouthpiece for oral irradiation, a photographing unit for photographing the face of the measurement subject through a near-infrared camera,
A setting unit for setting a pair of first points (P1), second points (P2) and third points (P3) on the left and right sides of the face, and
Each time a photograph is taken, each pixel value is extracted for each of the first to third points, and a light combination ratio of the LED is selected using the ratios of the pixel values between the first to third points. A sinus diagnosis system comprising a selection unit to: 10. The method of claim 9,
The first point (P1) is,
The pair of first points (P1) is,
In the photo taken through the near-infrared camera, virtual first and second virtual lines passing through each of the inner and outer points of the right eye, and virtual first and second horizontal lines passing through each of the tip of the lips and the end of the nose intersect The point having the largest pixel value in the region, and imaginary third and fourth vertical lines passing through the inner and outer corners of the left eye, respectively, and imaginary first and second horizontal lines passing through the lip and nose end points, respectively Including the point having the largest pixel value within the intersecting area,
The pair of second points (P2) is,
A point having the largest pixel value in an area where the first and second vertical lines in the photographed picture intersect a fourth horizontal line passing through the center between the second horizontal line and a virtual third horizontal line passing through the center point of the pupil; and a point having the largest pixel value in an area where the third and fourth vertical lines and a fourth horizontal line passing through the center between the second horizontal line and a virtual third horizontal line passing through the center point of the pupil intersect,
The pair of third points P3 is,
A point having the largest pixel value in an area where the first and second vertical lines, the third horizontal line, and the fourth horizontal line intersect in the photographed picture, and the third and fourth vertical lines and the third horizontal line; and a point having a largest pixel value within an area where the fourth horizontal line intersects. 10. The method of claim 9,
The mouthpiece for oral irradiation,
A sinus diagnosis system in which a plurality of LEDs are symmetrically mounted on the left and right sides of the center, respectively. 12. The method of claim 11,
The plurality of LEDs,
Sinus diagnostic system, listed as three or more each on the left and right. 12. The method of claim 11,
The control unit is
In a state in which only the second LED adjacent to the first LED positioned on the left or right side of the mouthpiece for oral irradiation is turned on, the face of the measurement subject is measured while varying the light combination ratio between the first LED and the second LED to shoot,
In a state in which only the third LED adjacent to the second LED is turned on, the sinus diagnosis system is configured to photograph the face of the subject to be measured while varying the light combination ratio between the second LED and the third LED. 14. The method of claim 13,
The selection unit,
A sinus diagnosis system for calculating a brightness index using the pixel values between the first to third points, and selecting a light combination ratio of the LED when the brightness index is the highest. 15. The method of claim 14,
The brightness index is
A sinus diagnosis system that calculates using the following equation:

where U and V are coefficients. 10. The method of claim 9,
Sinus diagnosis system further comprising a database for matching and storing the light combination ratio of the LED for each measurement target.

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